6.3

Table Of Contents
Property Symptoms
Property symptoms are based on the conguration properties that vRealize Operations Manager collects
from the target objects in your environment.
You dene symptoms based on properties so that you can create alert denitions that let you know when
changes to properties on your monitored objects can aect the behavior of the objects in your environment.
Message Event Symptoms
Message event symptoms are based on events received as messages from a component of
vRealize Operations Manager or from an external monitored system through the system's REST API. You
dene symptoms based on message events to include in alert denitions that use these symptoms. When the
congured symptom condition is true, the symptom is triggered.
The adapters for the external monitored systems and the REST API are inbound channels for collecting
events from external sources. Adapters and the REST server both run in the vRealize Operations Manager
system. The external system sends the messages, and vRealize Operations Manager collects them.
You can create message event symptoms for the supported event types. The following list is of supported
event types with example events.
n
System Performance Degradation. This message event type corresponds to the
EVENT_CLASS_SYSTEM and EVENT_SUBCLASS_PERFORM_DEGRADATION type and subtype in
the vRealize Operations Manager API SDK.
n
Change. The VMware adapter sends a change event when the CPU limit for a virtual machine is
changed from unlimited to 2 GHz. You can create a symptom to detect CPU contention issues as a
result of this conguration change. This message event type corresponds to the
EVENT_CLASS_CHANGE and EVENT_SUBCLASS_CHANGE type and subtype in the
vRealize Operations Manager API SDK.
n
Environment Down. The vRealize Operations Manager adapter sends an environment down event
when the collector component is not communicating with the other components. You can create a
symptom that is used for internal health monitoring. This message event type corresponds to the
EVENT_CLASS_ENVIRONMENT and EVENT_SUBCLASS_DOWN type and subtype in the
vRealize Operations Manager API SDK.
n
Notication. This message event type corresponds to the EVENT_CLASS_NOTIFICATION and
EVENT_SUBCLASS_EXTEVENT type and subtype in the vRealize Operations Manager API SDK.
Fault Symptoms
Fault symptoms are based on events published by monitored systems. vRealize Operations Manager
correlates a subset of these events and delivers them as faults. Faults are intended to signify events in the
monitored systems that aect the availability of objects in your environment. You dene symptoms based
on faults to include in alert denitions that use these symptoms. When the congured symptom condition is
true, the symptom is triggered.
You can create fault symptoms for the supported published faults. Some object types have multiple fault
denitions from which to choose, while others have no fault denitions.
If the adapter published fault denitions for an object type, you can select one or more fault events for a
given fault while you dene the symptom. The symptom is triggered if the fault is active because of any of
the chosen events. If you do not select a fault event, the symptom is triggered if the fault is active because of
a fault event.
vRealize Operations Manager Customization and Administration Guide
60 VMware, Inc.